Fundamental And Derived Quantities And Units - Practice Questions & MCQ
Quick Facts
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12 Questions around this concept.
Solve by difficulty
EASYWhich of the following is not a pair of fundamental quantities?
Which of the following is not a fundamental quantity in the SI system?
Which among the following is weakest Fundamental forces in nature
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Concepts Covered - 1
1) Fundamental Quantities
- Those physical quantities are independent of all other quantities and cannot be expressed in terms of other basic quantities.
- These quantities are also called absolute /basic quantities.
- Length, mass, time, electric current, temperature, amount of substance and luminous intensity.
2) Derived Quantities
- Derived Quantities are products and ratios of the fundamental quantities that exist in a system of units and these quantities can be expressed in terms of other basic quantities.
- e.g., Area, Density, Force, Pressure, etc.
- So l= length of the square is a fundamental quantity.
- But the area of square=A=l2 is Derived Quantity which we get with the help of taking a square of the length.
Fundamental and derived units:-
Fundamental units:- The units of fundamental or basic quantities are called fundamental units or base units.
Derived units:- The units of those physical quantities which can be expressed as the combination of fundamental units are called derived units.
Weakest fundamental force:- The weakest fundamental force in nature is the gravitational force.
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